Danny Boyle’s 127 Hours provided a tough, knuckle-munching finale
to the London Film Festival, at a world premiere in Leicester Square that
celebrated the courage of both the director and the movie’s real-life hero
Aron Ralston.

The spoiler alert comes straightaway here, since Ralston was trapped for five
days beneath a fallen boulder in the Blue John Canyon in Utah, until he
decided to saw his own arm off with a penknife. News of his astonishing
survival swept the world in 2003. Ralston was an extreme sports fanatic, and
his adventure gave Boyle an extreme filming challenge.